D-dimer mass concentration in plasma (quantitative)

Why is this test done?

Your doctor may order a D-dimer test to check for signs of blood clots, especially if you have symptoms like swelling, pain in your legs, or shortness of breath. It can also be used to evaluate conditions like deep vein thrombosis (DVT) or pulmonary embolism (PE).

What does a high or low result mean?

A high D-dimer level often suggests recent blood clotting activity, which may indicate conditions like DVT or PE. However, a low level does not always mean there are no clots, as other factors can affect the test. Your doctor will use the result along with other tests and symptoms to make a diagnosis.

How is the test performed?

A blood sample is taken from a vein in your arm. The blood is then processed to measure the D-dimer levels in your plasma. This test is usually done in a lab using a sensitive method to detect even small amounts of D-dimer.

What should I expect before the test?

There are no special preparations needed for this test. You can eat and drink normally on the day of the test. If you are on blood thinners, let your doctor know before the test.